1156827866 has 32 divisors (see below), whose sum is σ = 1895752512. Its totient is φ = 527212800.

The previous prime is 1156827853. The next prime is 1156827907. The reversal of 1156827866 is 6687286511.

It is a super-2 number, since 2×1156827866² = 2676501423108227912, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283541 + ... + 287591.

It is an arithmetic number, because the mean of its divisors is an integer number (59242266).

Almost surely, 2^1156827866 is an apocalyptic number.

1156827866 is a deficient number, since it is larger than the sum of its proper divisors (738924646).

1156827866 is a wasteful number, since it uses less digits than its factorization.

1156827866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4334.

The product of its digits is 967680, while the sum is 50.

The square root of 1156827866 is about 34012.1723210970. The cubic root of 1156827866 is about 1049.7589366478.

The spelling of 1156827866 in words is "one billion, one hundred fifty-six million, eight hundred twenty-seven thousand, eight hundred sixty-six".